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(i) why does the PCl_(5) exist but NCl_(5) does not? (ii) why does BaSO_(4) not soluble in water? |
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Answer» Solution :(i) . (II) For a compound to be soluble in `H_(2)O`, its lattice enthalpy should be low compare to its hybration enthalpy. Since, both `BA^(2+)` and `SO_(4)^(2-)` are LARGE I size, they stabilises each other to form a STRONG lattice. This leads to the insolubility of `BaSO_(4)` in water. |
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